diff --git a/BUILD.gn b/BUILD.gn
index 5a6cf14..9a8bf07 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -500,8 +500,8 @@
     "core/fpdfapi/parser/cpdf_hint_tables.h",
     "core/fpdfapi/parser/cpdf_indirect_object_holder.cpp",
     "core/fpdfapi/parser/cpdf_indirect_object_holder.h",
-    "core/fpdfapi/parser/cpdf_linearized.cpp",
-    "core/fpdfapi/parser/cpdf_linearized.h",
+    "core/fpdfapi/parser/cpdf_linearized_header.cpp",
+    "core/fpdfapi/parser/cpdf_linearized_header.h",
     "core/fpdfapi/parser/cpdf_name.cpp",
     "core/fpdfapi/parser/cpdf_name.h",
     "core/fpdfapi/parser/cpdf_null.cpp",
diff --git a/core/fpdfapi/parser/cpdf_data_avail.cpp b/core/fpdfapi/parser/cpdf_data_avail.cpp
index e6d2c61..1f43a4b 100644
--- a/core/fpdfapi/parser/cpdf_data_avail.cpp
+++ b/core/fpdfapi/parser/cpdf_data_avail.cpp
@@ -15,7 +15,7 @@
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
 #include "core/fpdfapi/parser/cpdf_document.h"
 #include "core/fpdfapi/parser/cpdf_hint_tables.h"
-#include "core/fpdfapi/parser/cpdf_linearized.h"
+#include "core/fpdfapi/parser/cpdf_linearized_header.h"
 #include "core/fpdfapi/parser/cpdf_name.h"
 #include "core/fpdfapi/parser/cpdf_number.h"
 #include "core/fpdfapi/parser/cpdf_reference.h"
@@ -783,7 +783,7 @@
     return false;
 
   uint32_t objnum = FXSYS_atoui(wordObjNum.c_str());
-  m_pLinearized = CPDF_Linearized::CreateForObject(pdfium::WrapUnique(
+  m_pLinearized = CPDF_LinearizedHeader::CreateForObject(pdfium::WrapUnique(
       ParseIndirectObjectAt(m_syntaxParser.m_HeaderOffset + 9, objnum)));
   if (!m_pLinearized ||
       m_pLinearized->GetFileSize() != m_pFileRead->GetSize()) {
diff --git a/core/fpdfapi/parser/cpdf_data_avail.h b/core/fpdfapi/parser/cpdf_data_avail.h
index bff9f29..e4fc7ba 100644
--- a/core/fpdfapi/parser/cpdf_data_avail.h
+++ b/core/fpdfapi/parser/cpdf_data_avail.h
@@ -16,7 +16,7 @@
 class CPDF_Dictionary;
 class CPDF_HintTables;
 class CPDF_IndirectObjectHolder;
-class CPDF_Linearized;
+class CPDF_LinearizedHeader;
 class CPDF_Parser;
 
 enum PDF_DATAAVAIL_STATUS {
@@ -200,7 +200,7 @@
   CPDF_Object* m_pRoot;
   uint32_t m_dwRootObjNum;
   uint32_t m_dwInfoObjNum;
-  std::unique_ptr<CPDF_Linearized> m_pLinearized;
+  std::unique_ptr<CPDF_LinearizedHeader> m_pLinearized;
   CPDF_Object* m_pTrailer;
   bool m_bDocAvail;
   FX_FILESIZE m_dwHeaderOffset;
diff --git a/core/fpdfapi/parser/cpdf_document.cpp b/core/fpdfapi/parser/cpdf_document.cpp
index d9ffc0b..eb2ab55 100644
--- a/core/fpdfapi/parser/cpdf_document.cpp
+++ b/core/fpdfapi/parser/cpdf_document.cpp
@@ -17,7 +17,7 @@
 #include "core/fpdfapi/page/pageint.h"
 #include "core/fpdfapi/parser/cpdf_array.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
-#include "core/fpdfapi/parser/cpdf_linearized.h"
+#include "core/fpdfapi/parser/cpdf_linearized_header.h"
 #include "core/fpdfapi/parser/cpdf_number.h"
 #include "core/fpdfapi/parser/cpdf_parser.h"
 #include "core/fpdfapi/parser/cpdf_reference.h"
@@ -380,7 +380,7 @@
 }
 
 void CPDF_Document::LoadLinearizedDoc(
-    const CPDF_Linearized* pLinearizationParams) {
+    const CPDF_LinearizedHeader* pLinearizationParams) {
   m_bLinearized = true;
   LoadDocInternal();
   m_PageList.SetSize(pLinearizationParams->GetPageCount());
diff --git a/core/fpdfapi/parser/cpdf_document.h b/core/fpdfapi/parser/cpdf_document.h
index 1b18015..cf1bcae 100644
--- a/core/fpdfapi/parser/cpdf_document.h
+++ b/core/fpdfapi/parser/cpdf_document.h
@@ -26,7 +26,7 @@
 class CPDF_FontEncoding;
 class CPDF_IccProfile;
 class CPDF_Image;
-class CPDF_Linearized;
+class CPDF_LinearizedHeader;
 class CPDF_Parser;
 class CPDF_Pattern;
 class CPDF_StreamAcc;
@@ -86,7 +86,7 @@
   CPDF_IccProfile* LoadIccProfile(CPDF_Stream* pStream);
 
   void LoadDoc();
-  void LoadLinearizedDoc(const CPDF_Linearized* pLinearizationParams);
+  void LoadLinearizedDoc(const CPDF_LinearizedHeader* pLinearizationParams);
   void LoadPages();
 
   void CreateNewDoc();
diff --git a/core/fpdfapi/parser/cpdf_document_unittest.cpp b/core/fpdfapi/parser/cpdf_document_unittest.cpp
index e20a5a1..7b5ab43 100644
--- a/core/fpdfapi/parser/cpdf_document_unittest.cpp
+++ b/core/fpdfapi/parser/cpdf_document_unittest.cpp
@@ -9,7 +9,7 @@
 #include "core/fpdfapi/cpdf_modulemgr.h"
 #include "core/fpdfapi/parser/cpdf_array.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
-#include "core/fpdfapi/parser/cpdf_linearized.h"
+#include "core/fpdfapi/parser/cpdf_linearized_header.h"
 #include "core/fpdfapi/parser/cpdf_parser.h"
 #include "core/fxcrt/fx_memory.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -76,9 +76,10 @@
   std::unique_ptr<CPDF_Dictionary> m_pOwnedRootDict;
 };
 
-class TestLinearized : public CPDF_Linearized {
+class TestLinearized : public CPDF_LinearizedHeader {
  public:
-  explicit TestLinearized(CPDF_Dictionary* dict) : CPDF_Linearized(dict) {}
+  explicit TestLinearized(CPDF_Dictionary* dict)
+      : CPDF_LinearizedHeader(dict) {}
 };
 }  // namespace
 
diff --git a/core/fpdfapi/parser/cpdf_hint_tables.cpp b/core/fpdfapi/parser/cpdf_hint_tables.cpp
index bbc57da..5c0f2a7 100644
--- a/core/fpdfapi/parser/cpdf_hint_tables.cpp
+++ b/core/fpdfapi/parser/cpdf_hint_tables.cpp
@@ -12,7 +12,7 @@
 #include "core/fpdfapi/parser/cpdf_data_avail.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
 #include "core/fpdfapi/parser/cpdf_document.h"
-#include "core/fpdfapi/parser/cpdf_linearized.h"
+#include "core/fpdfapi/parser/cpdf_linearized_header.h"
 #include "core/fpdfapi/parser/cpdf_stream.h"
 #include "core/fpdfapi/parser/cpdf_stream_acc.h"
 #include "core/fxcrt/fx_safe_types.h"
@@ -35,7 +35,7 @@
 }  // namespace
 
 CPDF_HintTables::CPDF_HintTables(CPDF_DataAvail* pDataAvail,
-                                 CPDF_Linearized* pLinearized)
+                                 CPDF_LinearizedHeader* pLinearized)
     : m_pDataAvail(pDataAvail),
       m_pLinearized(pLinearized),
       m_nFirstPageSharedObjs(0),
diff --git a/core/fpdfapi/parser/cpdf_hint_tables.h b/core/fpdfapi/parser/cpdf_hint_tables.h
index 68b5059..e0bc6e0 100644
--- a/core/fpdfapi/parser/cpdf_hint_tables.h
+++ b/core/fpdfapi/parser/cpdf_hint_tables.h
@@ -14,12 +14,13 @@
 #include "core/fxcrt/fx_stream.h"
 
 class CFX_BitStream;
-class CPDF_Linearized;
+class CPDF_LinearizedHeader;
 class CPDF_Stream;
 
 class CPDF_HintTables {
  public:
-  CPDF_HintTables(CPDF_DataAvail* pDataAvail, CPDF_Linearized* pLinearized);
+  CPDF_HintTables(CPDF_DataAvail* pDataAvail,
+                  CPDF_LinearizedHeader* pLinearized);
   virtual ~CPDF_HintTables();
 
   bool GetPagePos(uint32_t index,
@@ -53,7 +54,7 @@
   CPDF_DataAvail* const m_pDataAvail;
 
   // Owned by |m_pDataAvail|.
-  CPDF_Linearized* const m_pLinearized;
+  CPDF_LinearizedHeader* const m_pLinearized;
 
   uint32_t m_nFirstPageSharedObjs;
   FX_FILESIZE m_szFirstPageObjOffset;
diff --git a/core/fpdfapi/parser/cpdf_linearized.cpp b/core/fpdfapi/parser/cpdf_linearized_header.cpp
similarity index 85%
rename from core/fpdfapi/parser/cpdf_linearized.cpp
rename to core/fpdfapi/parser/cpdf_linearized_header.cpp
index ec57f10..9ecc051 100644
--- a/core/fpdfapi/parser/cpdf_linearized.cpp
+++ b/core/fpdfapi/parser/cpdf_linearized_header.cpp
@@ -4,7 +4,7 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#include "core/fpdfapi/parser/cpdf_linearized.h"
+#include "core/fpdfapi/parser/cpdf_linearized_header.h"
 
 #include "core/fpdfapi/parser/cpdf_array.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
@@ -32,7 +32,7 @@
 }  // namespace
 
 // static
-std::unique_ptr<CPDF_Linearized> CPDF_Linearized::CreateForObject(
+std::unique_ptr<CPDF_LinearizedHeader> CPDF_LinearizedHeader::CreateForObject(
     std::unique_ptr<CPDF_Object> pObj) {
   auto pDict = ToDictionary(std::move(pObj));
   if (!pDict || !pDict->KeyExist("Linearized") ||
@@ -43,12 +43,10 @@
       !IsValidNumericDictionaryValue<FX_FILESIZE>(pDict.get(), "E", 1) ||
       !IsValidNumericDictionaryValue<uint32_t>(pDict.get(), "O", 1))
     return nullptr;
-  return pdfium::WrapUnique(new CPDF_Linearized(pDict.get()));
+  return pdfium::WrapUnique(new CPDF_LinearizedHeader(pDict.get()));
 }
 
-CPDF_Linearized::CPDF_Linearized(const CPDF_Dictionary* pDict) {
-  if (!pDict)
-    return;
+CPDF_LinearizedHeader::CPDF_LinearizedHeader(const CPDF_Dictionary* pDict) {
   m_szFileSize = pDict->GetIntegerFor("L");
   m_dwFirstPageNo = pDict->GetIntegerFor("P");
   m_szLastXRefOffset = pDict->GetIntegerFor("T");
@@ -64,8 +62,8 @@
   }
 }
 
-CPDF_Linearized::~CPDF_Linearized() {}
+CPDF_LinearizedHeader::~CPDF_LinearizedHeader() {}
 
-bool CPDF_Linearized::HasHintTable() const {
+bool CPDF_LinearizedHeader::HasHintTable() const {
   return GetPageCount() > 1 && GetHintStart() > 0 && GetHintLength() > 0;
 }
diff --git a/core/fpdfapi/parser/cpdf_linearized.h b/core/fpdfapi/parser/cpdf_linearized_header.h
similarity index 80%
rename from core/fpdfapi/parser/cpdf_linearized.h
rename to core/fpdfapi/parser/cpdf_linearized_header.h
index caf538e..0d6d725 100644
--- a/core/fpdfapi/parser/cpdf_linearized.h
+++ b/core/fpdfapi/parser/cpdf_linearized_header.h
@@ -4,8 +4,8 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#ifndef CORE_FPDFAPI_PARSER_CPDF_LINEARIZED_H_
-#define CORE_FPDFAPI_PARSER_CPDF_LINEARIZED_H_
+#ifndef CORE_FPDFAPI_PARSER_CPDF_LINEARIZED_HEADER_H_
+#define CORE_FPDFAPI_PARSER_CPDF_LINEARIZED_HEADER_H_
 
 #include <memory>
 
@@ -15,10 +15,10 @@
 class CPDF_Dictionary;
 class CPDF_Object;
 
-class CPDF_Linearized {
+class CPDF_LinearizedHeader {
  public:
-  ~CPDF_Linearized();
-  static std::unique_ptr<CPDF_Linearized> CreateForObject(
+  ~CPDF_LinearizedHeader();
+  static std::unique_ptr<CPDF_LinearizedHeader> CreateForObject(
       std::unique_ptr<CPDF_Object> pObj);
 
   // Will only return values > 0.
@@ -39,7 +39,7 @@
   FX_FILESIZE GetHintLength() const { return m_szHintLength; }
 
  protected:
-  explicit CPDF_Linearized(const CPDF_Dictionary* pDict);
+  explicit CPDF_LinearizedHeader(const CPDF_Dictionary* pDict);
 
  private:
   FX_FILESIZE m_szFileSize = 0;
@@ -52,4 +52,4 @@
   FX_FILESIZE m_szHintLength = 0;
 };
 
-#endif  // CORE_FPDFAPI_PARSER_CPDF_LINEARIZED_H_
+#endif  // CORE_FPDFAPI_PARSER_CPDF_LINEARIZED_HEADER_H_
diff --git a/core/fpdfapi/parser/cpdf_parser.cpp b/core/fpdfapi/parser/cpdf_parser.cpp
index 044d12d..74136ef 100644
--- a/core/fpdfapi/parser/cpdf_parser.cpp
+++ b/core/fpdfapi/parser/cpdf_parser.cpp
@@ -12,7 +12,7 @@
 #include "core/fpdfapi/parser/cpdf_crypto_handler.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
 #include "core/fpdfapi/parser/cpdf_document.h"
-#include "core/fpdfapi/parser/cpdf_linearized.h"
+#include "core/fpdfapi/parser/cpdf_linearized_header.h"
 #include "core/fpdfapi/parser/cpdf_number.h"
 #include "core/fpdfapi/parser/cpdf_reference.h"
 #include "core/fpdfapi/parser/cpdf_security_handler.h"
@@ -1449,7 +1449,7 @@
     return false;
   }
 
-  m_pLinearized = CPDF_Linearized::CreateForObject(
+  m_pLinearized = CPDF_LinearizedHeader::CreateForObject(
       pdfium::WrapUnique(m_pSyntax->GetObject(nullptr, objnum, gennum, true)));
   if (!m_pLinearized)
     return false;
diff --git a/core/fpdfapi/parser/cpdf_parser.h b/core/fpdfapi/parser/cpdf_parser.h
index b8ce7ab..faac6c5 100644
--- a/core/fpdfapi/parser/cpdf_parser.h
+++ b/core/fpdfapi/parser/cpdf_parser.h
@@ -19,7 +19,7 @@
 class CPDF_Dictionary;
 class CPDF_Document;
 class CPDF_IndirectObjectHolder;
-class CPDF_Linearized;
+class CPDF_LinearizedHeader;
 class CPDF_Object;
 class CPDF_SecurityHandler;
 class CPDF_StreamAcc;
@@ -158,7 +158,7 @@
   std::set<FX_FILESIZE> m_SortedOffset;
   std::vector<CPDF_Dictionary*> m_Trailers;
   bool m_bVersionUpdated;
-  std::unique_ptr<CPDF_Linearized> m_pLinearized;
+  std::unique_ptr<CPDF_LinearizedHeader> m_pLinearized;
   uint32_t m_dwXrefStartObjNum;
 
   // A map of object numbers to indirect streams. Map owns the streams.
diff --git a/testing/libfuzzer/pdf_hint_table_fuzzer.cc b/testing/libfuzzer/pdf_hint_table_fuzzer.cc
index ec51517..e4606f6 100644
--- a/testing/libfuzzer/pdf_hint_table_fuzzer.cc
+++ b/testing/libfuzzer/pdf_hint_table_fuzzer.cc
@@ -20,7 +20,7 @@
 
 class HintTableForFuzzing : public CPDF_HintTables {
  public:
-  HintTableForFuzzing(CPDF_Linearized* pLinearized,
+  HintTableForFuzzing(CPDF_LinearizedHeader* pLinearized,
                       int shared_hint_table_offset)
       : CPDF_HintTables(nullptr, pLinearized),
         shared_hint_table_offset_(shared_hint_table_offset) {}
@@ -44,10 +44,10 @@
   int shared_hint_table_offset_;
 };
 
-class FakeLinearized : public CPDF_Linearized {
+class FakeLinearized : public CPDF_LinearizedHeader {
  public:
   explicit FakeLinearized(CPDF_Dictionary* linearized_dict)
-      : CPDF_Linearized(linearized_dict) {}
+      : CPDF_LinearizedHeader(linearized_dict) {}
 };
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {